Hi folks!
I've got an alternator providing 3 phase voltage at 12.4V AC. I'm putting one of these phases through a full wave rectifier diode bridge, which brings it down to around 11V DC or thereabouts.
This is then going through a voltage divider, and into an Arduino to measure voltage.
I can't find any formula for capacitor size calculation to smooth out the ripple of the regulated voltage, that doesn't include current. Since I'm sending it into an Arduino, I believe there is no current draw.
Is there another formula to calculate this, without needing a current value?
Or can I just stick in a 100uF capacitor and expect it to do a reasonable job??
I've got an alternator providing 3 phase voltage at 12.4V AC. I'm putting one of these phases through a full wave rectifier diode bridge, which brings it down to around 11V DC or thereabouts.
This is then going through a voltage divider, and into an Arduino to measure voltage.
I can't find any formula for capacitor size calculation to smooth out the ripple of the regulated voltage, that doesn't include current. Since I'm sending it into an Arduino, I believe there is no current draw.
Is there another formula to calculate this, without needing a current value?
Or can I just stick in a 100uF capacitor and expect it to do a reasonable job??